我正在尝试制作一个象限中的图像,每个图像中的颜色都有变化。我设法做了一半的图像,但另一半只是模糊 - 并没有错误信息。什么出了什么问题?我希望右上角是灰度,右下角是黑白色
这是我的代码:
import cImage as image
img = image.Image("/home/users/groth1/Downloads/selfie.JPG")
newimg = image.EmptyImage(img.getWidth(), img.getHeight())
win = image.ImageWin(title="Pic",width=img.getWidth(),height=img.getHeight())
img.draw(win)
xQuadrantBoundary = img.getWidth()//2
yQuadrantBoundary = img.getHeight()//2
for row in range(img.getHeight()):
for col in range(img.getWidth()):
p = img.getPixel(col, row)
if row < yQuadrantBoundary:
if col < xQuadrantBoundary:
# upper left negative
newred = 255 - p.getRed()
newgreen = 255 - p.getGreen()
newblue = 255 - p.getBlue()
newpixel1 = image.Pixel(newred, newgreen, newblue)
img.setPixel(col, row, newpixel1)
elif col >= xQuadrantBoundary:
# upper right grayscale ***
red = p.getRed()
green = p.getGreen()
blue = p.getBlue()
avg = (red + green + blue) / 3.0
newpixel2 = image.Pixel(newred, newgreen, newblue)
img.setPixel(col, row, newpixel2)
elif row >= yQuadrantBoundary:
if col < xQuadrantBoundary:
# lower left no green
newred = p.getRed()
newgreen = 0
newblue = p.getBlue()
newpixel3 = image.Pixel(newred, newgreen, newblue)
img.setPixel(col, row, newpixel3)
elif col >= xQuadrantBoundary:
# lower right black and white ***
red = p.getRed()
if red > 140:
val = 255
else:
val = 0
newpixel4 = image.Pixel(newred, newgreen, newblue)
img.setPixel(col, row, newpixel4)
img.draw(win)
win.exitonclick()
答案 0 :(得分:1)
newpixel2 = image.Pixel(newred, newgreen, newblue)
应该是
newpixel2 = image.Pixel(avg, avg, avg)
和
newpixel4 = image.Pixel(newred, newgreen, newblue)
应该是
newpixel4 = image.Pixel(val, val, val)
否则您将重复使用上次计算的newred
,newgreen
和newblue
值,因此&#34;条纹&#34;颜色。